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Questions & Answers
I’m guessing not compatible with the SD3G?

It definitely is, even w/o “G-Lever” or whatever they call their lever block. Personally have the flat faced SD3G. I hope this helps and great trigger choice

by Magdumper0507, Verified Owner, June 21, 2026
It says not compatible with Geissele X series triggers. Does that include the SSA-EX w/ lightning bow trigger?

yes. it only works w/ the ssa & ssa-e. no x series. not even sdc or sde as the flat faced trigger is thicker. this came directly from atrius support.

by gonzodave, Verified Owner, May 21, 2026
Customer Reviews
Expert Review
Put In The Work To Earn The Reward by Esho, Gear Expert, June 16, 2026
As many builders in this space know, there’s nothing “plug-and-play” ready about a super safety selector. This Atrius was no exception. While Atrius includes a "Lever Blocker" designed to cap cam travel and prevent over-rotation under the hammer, a...
Read More...
13/16 found this helpful
Helpful Positive Review
It works with some lowers (those made by Zev: SOLGW, SupDef, Umbrella Corp., Mega, Rooftop). It doesn’t work in LMT or Colt. Minimal polishing of my SSA-E was required but it works great.
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Helpful Positive Review
Ordered 2. 1 fit but the other had issues but exchanged it and the replacement worked…
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FRT's best by TxFrmn, Verified Owner, June 18, 2026
Absolute marvel of engineering , perfect cycle and easy installation
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A Lot of Fun by Major Trick, Verified Owner, July 30, 2026
Easy to install. Took 10 minutes. It works, but you might have to do some adjustments. I had to buy a heavier buffer and an adjustable gas block as I was way over gassed even on an M4 BCG. It was so worth it.
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SD3G COMPATIBLE by Jace, Verified Owner, August 6, 2026
This works well with the SD3G and I recommend it to everybody who has the same trigger. Go get it! I function tested it. Shot it at the range and it works well considering I have an H3 buffer and full-auto BCG. GO GET IT. IT WORKS WITH SD3G FYI: Lev...
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We've got an AWESOME deal for you!

Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
Color:
Black
Hand:
Ambidextrous
Condition:
New

Code: 6P5-FRX-ADMT01-ADG-FRS-AMBI-G

MPN: ADG-FRS-AMBI-G

UPC: 850079014022

Blazin' DealFinal Sale
List: $269.00
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Product Info for Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific

Atrius's most robust Forced Reset solution on the market that enables the user to have 3 positions; SAFE, SEMI (Traditional) and SUPER-SEMI is now compatible with Geissele Triggers!image

The G-LEVER is an Ambidextrous FRS that comes with a Lever Blocker designed to keep your cam lever from over-rotating beneath the trigger group's hammer. The Lever Blocker is made of aluminum and is black nitrided to combat wear or corrosion.

Atrius Development Group's G-LEVER is compatible with Geissele SSA, SSA-E, and G2S triggers. (Please Note: The Geissele "X Series" are currently not compatible)

Atrius Forced Reset Selectors (FRS) are compatible with mil-spec/full-profile AR15 (chambered in .223/5.56/.300 BLK) fire control groups with no modifications required.

Specifications for Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific:

Manufacturer: Atrius Development
Color: Black
Finish: Corrosion Resistant
Gun Make: AR Platform
Gun Model: AR-15
Fabric/Material: 4140 Steel
Hand: Ambidextrous
Condition: New
Caliber: 5.56x45mm NATO, .300 AAC Blackout, .223 Remington

Features of Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific

  • Drop-In Installation: Swap out your factory safety in minutes and experience the next level of firearm manipulation (some fitment may be required).
  • Runs with Mil-Spec Fire Control Groups: Seamlessly integrates with standard AR fire control groups, ensuring flawless function and longevity without modification.
  • Hardcore Durability: Crafted from heat-treated, 4140 steel and coated in a corrosion-resistant finish, the Atrius FRS laughs in the face of wear and tear. Rain, mud, sweat, it eats it all for breakfast.
  • Mechanically Leveraged Design: Atrius's Forced Reset Selector (FRS) reduces wear on your rifle, preserving your weapons longevity unlike forced-reset triggers (FRTs) that accelerate internal component degradation.
  • Ultra-Smooth Engagement: Crisp, tactile clicks with no mushy nonsense. Designed for 90-degree throw engagement.
  • Positive Positioning Without Slippage: Engineered for rock-solid engagement, eliminating the risk of unintentional movement mid-fire, keeping you in full control at all times.
  • Aggressive Ergonomics: Textured, chamfered, and purpose-built for speed. Your thumb finds the selector instantly, even under stress, with no fumbling, no hesitation, just pure control.

Package Contents:

  • Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific

Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific Orderable Models

List of Orderable Models

  • Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific, Black, ADG-FRS-AMBI-G , MPN: ADG-FRS-AMBI-G , UPC: 850079014022 , Code: 6P5-FRX-ADMT01-ADG-FRS-AMBI-G

Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Atrius Development G-Lever Ambidextrous Forced Reset Safety - Geissele Specific, Black, ADG-FRS-AMBI-G , MPN: ADG-FRS-AMBI-G-DEMO , Code: 6P5-FRX-ADMT01-ADG-FRS-AMBI-G-DEMO-OB-A
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Last updated 2026-08-11 UTC.